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#
# Author:: AJ Christensen (<aj@hjksolutions.com>)
# Copyright:: Copyright (c) 2008 Opscode, Inc.
# License:: Apache License, Version 2.0
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
#
require 'chef/provider/service/init'
class Chef
class Provider
class Service
class Debian < Chef::Provider::Service::Init
UPDATE_RC_D_ENABLED_MATCHES = /\/rc[\dS].d\/S|not installed/i
UPDATE_RC_D_PRIORITIES = /\/rc([\dS]).d\/([SK])(\d\d)/i
provides :service, platform_family: "debian"
def self.supports?(resource, action)
Chef::Platform::ServiceHelpers.service_resource_providers.include?(:debian)
end
def load_current_resource
super
@priority_success = true
@rcd_status = nil
current_resource.priority(get_priority)
current_resource.enabled(service_currently_enabled?(current_resource.priority))
current_resource
end
def define_resource_requirements
# do not call super here, inherit only shared_requirements
shared_resource_requirements
requirements.assert(:all_actions) do |a|
update_rcd = "/usr/sbin/update-rc.d"
a.assertion { ::File.exists? update_rcd }
a.failure_message Chef::Exceptions::Service, "#{update_rcd} does not exist!"
# no whyrun recovery - this is a base system component of debian
# distros and must be present
end
requirements.assert(:all_actions) do |a|
a.assertion { @priority_success }
a.failure_message Chef::Exceptions::Service, "/usr/sbin/update-rc.d -n -f #{current_resource.service_name} failed - #{@rcd_status.inspect}"
# This can happen if the service is not yet installed,so we'll fake it.
a.whyrun ["Unable to determine priority of service, assuming service would have been correctly installed earlier in the run.",
"Assigning temporary priorities to continue.",
"If this service is not properly installed prior to this point, this will fail."] do
temp_priorities = {"6"=>[:stop, "20"],
"0"=>[:stop, "20"],
"1"=>[:stop, "20"],
"2"=>[:start, "20"],
"3"=>[:start, "20"],
"4"=>[:start, "20"],
"5"=>[:start, "20"]}
current_resource.priority(temp_priorities)
end
end
end
def get_priority
priority = {}
@rcd_status = popen4("/usr/sbin/update-rc.d -n -f #{current_resource.service_name} remove") do |pid, stdin, stdout, stderr|
[stdout, stderr].each do |iop|
iop.each_line do |line|
if UPDATE_RC_D_PRIORITIES =~ line
# priority[runlevel] = [ S|K, priority ]
# S = Start, K = Kill
# debian runlevels: 0 Halt, 1 Singleuser, 2 Multiuser, 3-5 == 2, 6 Reboot
priority[$1] = [($2 == "S" ? :start : :stop), $3]
end
if line =~ UPDATE_RC_D_ENABLED_MATCHES
enabled = true
end
end
end
end
# Reduce existing priority back to an integer if appropriate, picking
# runlevel 2 as a baseline
if priority[2] && [2..5].all? { |runlevel| priority[runlevel] == priority[2] }
priority = priority[2].last
end
unless @rcd_status.exitstatus == 0
@priority_success = false
end
priority
end
def service_currently_enabled?(priority)
enabled = false
priority.each { |runlevel, arguments|
Chef::Log.debug("#{new_resource} runlevel #{runlevel}, action #{arguments[0]}, priority #{arguments[1]}")
# if we are in a update-rc.d default startup runlevel && we start in this runlevel
if %w[ 1 2 3 4 5 S ].include?(runlevel) && arguments[0] == :start
enabled = true
end
}
enabled
end
# Override method from parent to ensure priority is up-to-date
def action_enable
if new_resource.priority.nil?
priority_ok = true
else
priority_ok = @current_resource.priority == new_resource.priority
end
if current_resource.enabled and priority_ok
Chef::Log.debug("#{new_resource} already enabled - nothing to do")
else
converge_by("enable service #{new_resource}") do
enable_service
Chef::Log.info("#{new_resource} enabled")
end
end
load_new_resource_state
new_resource.enabled(true)
end
def enable_service
if new_resource.priority.is_a? Integer
shell_out!("/usr/sbin/update-rc.d -f #{new_resource.service_name} remove")
shell_out!("/usr/sbin/update-rc.d #{new_resource.service_name} defaults #{new_resource.priority} #{100 - new_resource.priority}")
elsif new_resource.priority.is_a? Hash
# we call the same command regardless of we're enabling or disabling
# users passing a Hash are responsible for setting their own start priorities
set_priority
else # No priority, go with update-rc.d defaults
shell_out!("/usr/sbin/update-rc.d -f #{new_resource.service_name} remove")
shell_out!("/usr/sbin/update-rc.d #{new_resource.service_name} defaults")
end
end
def disable_service
if new_resource.priority.is_a? Integer
# Stop processes in reverse order of start using '100 - start_priority'
shell_out!("/usr/sbin/update-rc.d -f #{new_resource.service_name} remove")
shell_out!("/usr/sbin/update-rc.d -f #{new_resource.service_name} stop #{100 - new_resource.priority} 2 3 4 5 .")
elsif new_resource.priority.is_a? Hash
# we call the same command regardless of we're enabling or disabling
# users passing a Hash are responsible for setting their own stop priorities
set_priority
else
# no priority, using '100 - 20 (update-rc.d default)' to stop in reverse order of start
shell_out!("/usr/sbin/update-rc.d -f #{new_resource.service_name} remove")
shell_out!("/usr/sbin/update-rc.d -f #{new_resource.service_name} stop 80 2 3 4 5 .")
end
end
def set_priority
args = ""
new_resource.priority.each do |level, o|
action = o[0]
priority = o[1]
args += "#{action} #{priority} #{level} . "
end
shell_out!("/usr/sbin/update-rc.d -f #{new_resource.service_name} remove")
shell_out!("/usr/sbin/update-rc.d #{new_resource.service_name} #{args}")
end
end
end
end
end
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